Hey guys.

My punto mk2b has a yellow warning light and I can smell petrol.
That's all the information I've got to give...
How do I proceed?

Hi,
it's a fault light, and will store a fault CODE in the ECU,
get the cODE read, and will help diagnose the problem,

does the engine still run+ sound o.k.?,

COULD be that it's not burning the fuel properly,and unburnt fuel is passing out of exhaust.. NOT good if that's the case,

Charlie - Oxford

varesecrazy said:

Hi,
it's a fault light, and will store a fault CODE in the ECU,
get the cODE read, and will help diagnose the problem,

does the engine still run+ sound o.k.?,

COULD be that it's not burning the fuel properly,and unburnt fuel is passing out of exhaust.. NOT good if that's the case,

Charlie - Oxford

Click to expand...

It still sounds okay, and it doesn't judder or anything. Seems to be running stably and sounds fine, but then I don't know much about cars

Shall I have a look at the exhaust pipe whilst it's running?

I'll get a code reader too.

Okay, just had another look.
Nothing visible is coming out of the exhaust pipe.

When running, the engine does sound like it's gently 'pulsing' - it's not a constant sound. The rpm is stable though.

CMaughan96 said:

It still sounds okay, and it doesn't judder or anything. Seems to be running stably and sounds fine, but then I don't know much about cars

Shall I have a look at the exhaust pipe whilst it's running?

I'll get a code reader too.

Click to expand...

probably a poor spark,
worth checking coolant + oil ( to rule out Head Gasket)

reading fault codes is the best way..
MultiECUScan is great for Italian Vehicles..
but IF you've other brands then any OBD2 reader will do the job, just remember they will ONLY do ENGINE codes,
so airbags, ABS , PAS etc you'll need something better- like MES,
Charlie - Oxford

varesecrazy said:

worth checking coolant + oil ( to rule out Head Gasket)

Click to expand...

Okay, there's seemingly no oil...? The oil warning light isn't on, but the dipstick doesn't have any oil on it between the min and max points.
Should the engine be visibly oily on the outside?

Hi again,
remove dipstick , ( with COLD engine on level ground )
clean / dry the WHOLE thing , the Hi + low levels are the FLAT hatched part,
BUT you should still have a "drip" on the lowest point of dipstick,
TBH - IF it's THAT LOW,
you may as well do an oil change,
as you're going to add 50% of the required oil now anyway..

Charlie